I spent most of the weekend clearing a blockage in our heating, hopefully getting sorted now as the x400 circulates.Got the boiler all back together and began testing, lovely hot tap water but now the central heating side wasn't working... Spent 3 hours troubleshooting only to realise I had forgotten the diaphragm return spring on the worktop behind me
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At least it's all working now and I've spent that long working on it I can remove/install bits of it now with my eyes closed![]()
Removed an old zone valve which hasn't been used for at least 20 years when the pump was moved from the loft. Heating is now working better than it ever has!